ES2914382T3 - Data transmission method and device - Google Patents

Abstract

A data transmission method performed by a terminal, wherein the method comprises: receiving (502) domain configuration information, wherein the domain configuration information is used to indicate configurations of a first domain and a second domain, and wherein the first domain and the second domain are distinguished by a bandwidth part, BWP, in the frequency domain, and wherein the domain configuration information comprises configuration information of a first BWP corresponding to the first domain and configuration information of a second BWP corresponding to the second domain; receive (504) power parameters, wherein some or all of the power parameters are set independently for the first BWP and for the second BWP, and wherein the power parameters include at least one of a power parameter received target, a path loss compensation coefficient and a dynamic power adjustment value; determine (505) a first power in the first domain according to the power parameters, and transmit (201) data at the first power in the first domain; determining a second power in the second domain in accordance with the power parameters, and transmitting data to the second power in the second domain.

Description

DESCRIPTION

Data transmission method and device

technical field

Embodiments of this application relate to the field of communications and, in particular, to a data transmission method and apparatus, and a data reception method and apparatus.

Related art

5th generation (5G) technology has introduced Ultra Reliable Low Latency Communication (URLLC).

When transmitting downlink service data, a base station transmits URLLC data in a resource preemptive manner. That is, when it is necessary to transmit URLLC data at present, the base station transmits the URLLC data by occupying some resources of an enhanced mobile broadband (eMBB) service, thereby reducing the latency of a URLLC service.

However, for an uplink process, the uplink service data is transmitted by a terminal and additional signaling overhead is required when the base station makes adjustments in real time. As a result, it is necessary for the terminal to frequently detect a delivered control signal, which increases the power consumption of the terminal.

WO 2017/193395 A1 discloses a method for uplink data transmission that avoids meaningless forwarding of uplink data and improves resource utilization rate.

US 2017/238292 A1 discloses a method for multiple physical resource block (PRB) operations for narrowband systems.

US 2016/330011 A1 discloses a method for interference management in a full duplex radio system.

EP 3267710 A1 discloses the adjustment of the transmission power of each Resource Block (RB) according to the type of service.

EP 3691343 A1 discloses an uplink channel forwarding method and device.

Summary

Embodiments of this application provide a data transmission method, apparatus and system that can solve a problem that a terminal needs to frequently detect a delivered control signal, which increases the power consumption of the terminal.

The invention is set forth in the attached set of claims.

Hereinafter, references to embodiments that do not fall within the scope of the claims do not form part of the invention, but are to be understood as useful examples for understanding the invention.

The technical solutions provided in the embodiments of this application have the following beneficial effects: By configuring different domains in the transmission resource, the terminal is enabled to transmit data at a corresponding power in different domains, to prevent the terminal from frequently detecting the signal of control in an uplink data transmission process, thereby reducing the power consumption of the terminal. Furthermore, transmitting data at different power helps improve the reliability and efficiency of data transmission between the terminal and the access network device in the communication system.

Brief description of the drawings

In order to more clearly describe the technical solutions in the embodiments of this application, the following briefly describes the accompanying drawings required to describe the embodiments of this application. It is evident that the attached drawings in the following descriptions merely show some embodiments of this application, and still other drawings can be inferred from these attached drawings by a person skilled in the art without any creative effort. Figure 1 is a schematic structural diagram of a communication network according to a schematic embodiment of this application;

Figure 2 is a flowchart of a data transmission method according to a schematic embodiment of this application;

Figure 3 is a flowchart of a data transmission method according to a schematic embodiment of this application;

Figure 4 is a flowchart of a data transmission method according to another schematic embodiment of this application;

Figure 5 is a flowchart of a data transmission method according to another schematic embodiment of this application;

Figure 6 is a block diagram of a data transmission apparatus according to an illustrative embodiment of this application;

Figure 7 is a block diagram of a data transmission apparatus according to an illustrative embodiment of this application;

Figure 8 is a schematic structural diagram of a terminal according to an illustrative embodiment of this application; Y

Figure 9 is a schematic structural diagram of an access network device according to an illustrative embodiment of this application.

Detailed description

In order to make the objectives, technical solutions and advantages of this application clearer, the following further describes the implementations of this application with reference to the accompanying drawings.

The "module" mentioned in this application usually refers to a program or an instruction, stored in a memory, that can implement some functions; the "unit" mentioned in this application usually refers to a functional structure that is logically divided, and the "unit" is implemented by pure hardware or by a combination of hardware and software.

The "plurality of" mentioned in this application refers to two or more. "and/or", which describes the association relationship of associated objects, representing that there are three relationships, for example, A and/or B, can represent: A exists alone, A and B exist simultaneously, and B exists alone. The "/" character usually represents that the associated objects before and after the character are in an "or" relationship. The terms "first", "second" and the like used in the specification and claims of this application do not represent any order, amount or importance, but simply distinguish the different components.

Referring to Figure 1, Figure 1 is a schematic structural diagram of a mobile communication system according to an embodiment of this application. The mobile communication system may be a 5G system, also known as a NR system. The mobile communication system includes: an access network device 120 and a terminal 140.

Access network device 120 may be a base station. For example, the base station can be a gNB that adopts a central distributed architecture in the 5G system. When the central distributed architecture is adopted, the access network device 120 typically includes a central unit (CU) and at least two distributed units (DU). A protocol stack of a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer and a media access control (MAC) layer is established in the central unit; a physical layer (PHY) protocol stack is established in the distributed unit, and embodiments of this application do not limit specific implementations of the access network device 120. Optionally, the access network device further includes a home eNB (HeNB), a relay, a Pico base station and the like. The access network device 120 is further known as a network side device.

Access network device 120 may establish a wireless connection with terminal 140 through a wireless air interface. Optionally, the wireless air interface is a wireless air interface based on a fifth generation (5G) mobile communication network technology standard. For example, the wireless air interface is a new radio (NR) air interface; or the wireless air interface is a wireless air interface based on the 5G next-generation mobile communication network technology standard. Terminal 140 refers to a device that provides voice and/or data connectivity for a user. The terminal may communicate with one or more core networks via a radio access network (RAN), and the terminal 140 may be a mobile terminal, for example, a mobile phone (also known as a "cellular" phone). ) and a computer with a mobile terminal.

It should be noted that, in the mobile communication system shown in Fig. 1, a plurality of access network devices 120 and/or a plurality of terminals 140, an access network device 120 and a terminal 140 may be included. they are shown in Fig. 1 as an example, but this embodiment does not limit this.

Referring to Figure 2, Figure 2 is a flow chart of a data transmission method in accordance with an illustrative embodiment of this application. This embodiment is illustrated using an example where the method is applied to the terminal in Figure 1. The method includes:

Step 201. The terminal transmits data at a first power in a first domain.

Step 202. The terminal transmits data to a second power in a second domain, where the first domain and the second domain are distinguished by a transmission resource.

Optionally, the first domain and the second domain are logical domains obtained by an access network device by dividing the transmission resource, wherein the transmission resource includes a time domain resource and/or a transmission domain resource. frequency.

In one possible implementation, the first domain and the second domain are distinguished using any one of the following ways.

1. The first domain and the second domain are distinguished through the resource in the time domain.

Optionally, the access network device distinguishes domains based on the time-domain resource, where the time-domain resource includes at least one of a symbol, a slot, and a subframe. Optionally, the first domain and the second domain occupy the same amount or different amounts of resources in the time domain.

For example, the access network device distinguishes domains according to slots, a first slot in the subframe may be assigned as the first domain, and a second slot in the subframe may be assigned as the second domain.

Indeed, the domains can be further distinguished based on other types of resources in the time domain, and this embodiment does not limit this.

2. The first domain and the second domain are distinguished through the resource in the frequency domain.

Optionally, the access network device distinguishes domains based on the frequency domain resource, where the frequency domain resource includes at least one of a physical resource block (PRB) and a group of blocks of resources (RBG).

Optionally, the first domain and the second domain occupy the same amount or different amounts of resources in the frequency domain.

For example, when the access network device distinguishes domains according to physical resource block, the first through fiftieth physical resource blocks can be assigned as the first domain, and the fifty-first through hundredth physical resource blocks can be assigned as the first domain. assign as the second domain. Indeed, the domains can be further configured based on other types of resources in the frequency domain, and this embodiment does not limit this.

3. The first domain and the second domain are distinguished by the resource in the time domain and the resource in the frequency domain.

Optionally, in addition to distinguishing the domains based solely on the frequency domain resource or the time domain resource, the access network device may further distinguish the domains based on either the time domain resource or the time domain resource. on the resource in the frequency domain.

Optionally, the access network device configures the first domain and the second domain based on both the slot and the physical resource block.

4. The first domain and the second domain are distinguished by a bandwidth part (BWP) in the frequency domain.

The BWP refers to a group of blocks of continuous physical resources in a given set of parameters and in a given carrier.

In a possible implementation, the access network device can configure at least two BWPs for the terminal in an available bandwidth, and the at least two BWPs correspond to different domains, respectively. For example, in this embodiment, the access network device configures a BWP 1 and a BWP 2 for the terminal, and the BWP 1 and BWP 2 correspond to the first domain and the second domain, respectively.

Optionally, when two BWPs are configured, the two BWPs correspond to different resources in the time domain and to different resources in the frequency domain. For example, BWP 1 corresponds to PRB 1 to PRB 50, and BWP 2 corresponds to PRB 51 to PRB 55; or the two BWPs correspond to the same time domain resource and the same frequency domain resource, but correspond to different subcarrier spacings. For example, both BWP 1 and BWP 2 correspond to a PRB 51 to a PRB 55. However, the corresponding subcarrier spacing for BWP 1 is 60 KHz, and the corresponding subcarrier spacing for BWP 2 is 15KHz

Optionally, in this embodiment of this application, the description is made using an example in which only two domains are configured, and at least three domains may be configured in other possible implementations. This request does not limit the specific number of domains.

Optionally, the access network device transmits, to the terminal, domain configuration information indicating configurations of the first domain and the second domain, such that the terminal determines the first domain and the second domain according to the configuration information. domain configuration.

Optionally, the domain configuration information transmitted by the access network device is further used to indicate a way of distinguishing and configuration information of the first domain and the second domain. For example, when different domains are configured via the BWP, the domain configuration information includes configuration information such as a BWP subcarrier spacing.

Optionally, the power parameters of the first power and the second power are configured by the access network device, where the power parameters may be represented in a real power value or a power spectral density (PSD).

In a possible application scenario, under the programming of the access network device, the terminal transmits service data at low power in the first domain, or transmits the service data at high power in the second domain; when the terminal transmits high-priority service data under the scheduling of the access network device, in order to reduce a transmission latency of the high-priority service data, the terminal chooses to transmit the high-priority service data in the first domain in a resource-preemptive manner, and in order to ensure transmission reliability, the high-priority service data is transmitted at the high power. Low power and high power may be agreed upon in a protocol, or may be indicated by the network access device.

Optionally, in an actual application scenario, when the above method is applied to an uplink data transmission scenario of eMBB service and URLLC service in 5G, under the programming of the access network device, the terminal transmits eMBB service data at the first power (ie low power) in the first domain, and transmits eMBB service data at the second power (ie normal power) in the second domain; when the terminal transmits URLLC service data under the programming of the access network device, in order to reduce a URLLC service data transmission latency, the terminal chooses to transmit the URLLC service data in the first domain assuming by preference an eMBB service resource and, in order to ensure the high reliability of the URLLC service, the terminal transmits the URLLC service data to a third power (greater than the first power, and equal to or different from the second power) in the first domain.

In conclusion, in this embodiment, by setting different domains in the transmission resource, the terminal is enabled to transmit data at a corresponding power in different domains, so as to prevent the terminal from frequently detecting a control signal in a data transmission process. uplink data, thereby reducing the power consumption of the terminal. Furthermore, transmitting data at different power helps improve the reliability and efficiency of data transmission between the terminal and the access network device in the communication system.

Referring to Figure 3, Figure 3 is a flow chart of a data transmission method in accordance with an illustrative embodiment of this application. This embodiment is illustrated using an example where the method is applied to the access network device in Figure 1. The method includes:

Step 301. The access network device transmits data at a first power in a first domain.

The access network device distinguishes the first domain and a second domain (logical domains) through a transmission resource, wherein the transmission resource includes a time domain resource and/or a frequency domain resource.

Optionally, the ways in which the access network device distinguishes the domains include the following: 1. The first domain and the second domain are distinguished through a resource in the time domain.

2. The first domain and the second domain are distinguished by a resource in the frequency domain. 3. The first domain and the second domain are distinguished by the resource in the time domain and the resource in the frequency domain.

4. The first domain and the second domain are distinguished by a bandwidth part (BWP) in the frequency domain.

Specific ways of distinguishing are described in detail at step 202, and details are not described again in this embodiment.

Step 302. The access network device transmits data to a second power in the second domain, where the first domain and the second domain are distinguished by the transmission resource.

In accordance with the distinguished domains, the access network device transmits downlink data at a corresponding power in corresponding domains.

In one possible implementation, the access network device transmits data at low power in the first domain and transmits data at high power in the second domain.

Optionally, in an actual application scenario, when the above method is applied to a downlink data transmission scenario of an eMBB service and a URLLC service in 5G, the access network device transmits eMBB service data to the first power (which is, for example, the low power) in the first domain, and transmits the eMBB service data to the second power (which is, for example, normal power, and is higher than the first power ) in the second domain;

Optionally, when it is necessary for the access network device to schedule the URLLC service, in order to reduce a transmission latency of the URLLC service data, the access network device chooses to transmit the URLLC service data in the first domain by preferentially assuming a resource of the eMBB service, and in order to ensure the high reliability of the URLLC service, the access network device transmits the URLLC service data to a third power (greater than the first power , and equal to or different from the second power) in the first domain.

Optionally, in order to instruct a terminal to similarly transmit uplink data, the access network device transmits domain configuration information to the terminal based on a domain configuration, where the network device The access point may transmit the domain configuration information in a broadcast manner.

In order to enable the terminal to transmit uplink data at a corresponding power in different domains, the access network device further indicates to the terminal the power at which data is transmitted in different domains. Optionally, the access network device transmits, to the terminal, a difference between a power parameter of the first power and a power parameter of the second power, or the access network device independently configures part of all of the the power parameters of the first power and the second power.

Furthermore, under the programming of the access network device, the terminal transmits data to the first power in the first domain, and transmits data to the second power in the second domain, and correspondingly, the access network device receives, in the first domain and/or the second domain, the data transmitted by the terminal. Regarding the received data, optionally, the access network device distinguishes the received data based on a length of a transmission time interval (TTI), a control resource set (COREST) or a channel format Physical Downlink Control (PDCCH Format). For example, the access network device distinguishes eMBB data and URLLC data according to the length of the TTI. This embodiment does not limit how the access network device distinguishes data types.

In conclusion, in this embodiment, by setting different domains in the transmission resource, the terminal is enabled to transmit data at a corresponding power in different domains, so as to prevent the terminal from frequently detecting a control signal in a data transmission process. uplink data, thereby reducing the power consumption of the terminal. Also, transmitting data at different power helps improve the reliability and efficiency of data transmission between the terminal and the access network device in the communication system.

Referring to Figure 4, Figure 4 is a flow chart of a data transmission method according to another illustrative embodiment of this application. This embodiment is illustrated using an example where the method is applied to the communication system in Figure 1. The method includes:

Step 401. An access network device transmits domain configuration information to a terminal, where the domain configuration information is used to indicate configurations of a first domain and a second domain.

Optionally, the domain configuration information includes: time domain configuration information, frequency domain configuration information, or time and frequency domain configuration information.

Optionally, the access network device transmits the domain configuration information to each terminal in a broadcast manner such that each accessed terminal knows a configuration of a domain.

In one possible implementation, when different domains are configured based on a block of physical resources, the domain configuration information transmitted by the access network device to the terminal may take the following format: Power_parameter (n_PRB) = {0, 1} , where n_PRB is used to indicate the nth physical resource block, where 0 represents that the physical resource block belongs to the first domain and 1 represents that the physical resource block belongs to the second domain.

Similarly, when different domains are configured based on a slot, the domain configuration information transmitted by the access network device to the terminal may take the following format: Power_parameter (n_slot) = {0, 1}, where n_slot is used to indicate the nth slot, 0 represents that the slot belongs to the first domain and 1 represents that the slot belongs to the second domain.

In order to reduce inter-cell interference and improve data transmission quality, in one possible implementation, domain configuration information may be exchanged between access network devices, such that an access network device may adjust its own domain configuration according to domain configuration information of an adjacent access network device, and transmits the adjusted domain configuration information to the terminal. For example, the domain configuration information A transmitted by an access network device A to an access network device B is: Power_parameter (PRB1) = {0} and Power_parameter (PRB2) = {1}, that is, access network device A allocates a first physical resource block to the first domain, allocates a second physical resource block to the second domain, and access network device B sets its own domain B configuration information to Power_Parameter (PRB1) = {1} and Parameter_power (Pr B2) = {0}.

Step 402. The terminal receives the domain configuration information transmitted by the access network device.

Step 403. The access network device transmits a power difference to the terminal, wherein the power difference is a difference between a power parameter of a first power and a power parameter of a second power.

In order to reduce the interference between data transmission in the first domain and data transmission in the second domain, it is necessary for the terminal to transmit data at different power in different domains. Correspondingly, when the domain configuration is indicated, it is additionally necessary that the access network device indicates, to the terminal, the transmission power of the data in different domains.

Optionally, the access network device transmits the power difference between the first domain and the second domain to the terminal. The power parameter can be represented in a real power value or a power spectral density.

Optionally, the access network device further transmits a configured power parameter to the terminal, such that the terminal determines the first power and the second power based on the power parameter and the power difference. The power parameters transmitted by the access network device include at least one of a target received power parameter, a path loss compensation coefficient, and a dynamic power adjustment value.

Optionally, for the power parameter, the following configuration forms are included:

1. The path loss compensation coefficient in the power parameters is set independently, and the target received power parameter and dynamic power adjustment value in the parameters power are configured in common.

When this setting form is adopted, the access network device sets respective path loss compensation coefficients for the domains, and sets a uniform target received power parameter and dynamic power adjustment value for the domains, i.e. That is, different domains have different path loss compensation coefficients, but have the same target received power parameter and dynamic power trim value.

2. The path loss compensation coefficient and the dynamic power adjustment value in the power parameters are set independently, and the target received power parameter in the power parameters is set in common.

When this form of configuration is adopted, the access network device sets path loss compensation coefficients and respective dynamic power adjustment values for the domains, and sets a uniform target received power parameter for the domains, i.e. , different domains have different path loss compensation coefficients and dynamic power trim values, but have the same target received power parameter.

3. The dynamic power adjustment value in the power parameters is set independently, and the target received power parameter and the path loss compensation coefficient in the power parameters are set in common.

When this configuration form is adopted, the access network device configures respective dynamic power adjustment values for the domains, and configures a uniform target received power parameter and path loss compensation coefficient for the domains, i.e. That is, different domains have different dynamic power adjustment values, but have the same target received power parameter and path loss compensation coefficient.

When the power parameter is configured in the above three ways, distinguishable power control can be realized for different scenarios, services, and data types, and the signaling overheads generated when the power parameter is configured can be further reduced (because to the existence of a shared configuration).

4. The dynamic power adjustment value, the target received power parameter and the path loss compensation coefficient in the power parameters are set in common.

When this form of configuration is adopted, the access network device configures a uniform target received power parameter, path loss compensation coefficient, and dynamic power adjustment value for domains, that is, different domains have a uniform same target received power parameter, same path loss compensation coefficient and same dynamic power adjustment value.

When the power parameter is configured in this way, the signaling overheads generated when the power parameter is configured are reduced to a minimum value because a configuration parameter is shared by different domains. In the subsequent process, the terminal performs distinguishable power control for different scenarios, services and data types according to the power difference configured by the access network device.

5. The target received power parameter and the path loss compensation coefficient in the power parameters are set independently, and the dynamic power adjustment value in the power parameters is set in common.

When this form of configuration is adopted, the access network device configures target received power parameters and respective path loss compensation coefficients for the domains, and shares the dynamic power adjustment value for the domains, that is, different domains have different target received power parameters and path loss compensation coefficients, but have the same dynamic power trim value.

When this form of configuration is adopted, distinguishable power control can be performed for different scenarios, services, and data types, and furthermore, a variation of a channel can be tracked in real time according to a dynamic power adjustment value. shared.

6. The target received power parameter, path loss compensation coefficient and dynamic power adjustment value in the power parameters are set independently.

When this form of configuration is adopted, the access network device configures target received power parameters, path loss compensation coefficients, and dynamic power adjustment values. for the domains, ie, different domains have different target received power parameters, different path loss compensation coefficients, and different dynamic power trim values.

When this form of configuration is adopted, more precise distinguishable power control can be performed for different scenarios, services and data types because respective power parameters are set for the domains (however, signaling overheads are increased accordingly). corresponding form).

7. The target received power parameter in the power parameters is set independently, and the path loss compensation coefficient and the dynamic power adjustment value in the power parameters are set in common.

When this form of configuration is adopted, the access network device sets respective target received power parameters for the domains, and sets a uniform dynamic power adjustment value and path loss compensation coefficient for the domains, i.e. That is, different domains have different target received power parameters, but have the same dynamic power trim value and different path loss compensation coefficients.

When this form of configuration is adopted, distinguishable power control can be realized for different scenarios, services and data types by independently setting only the target received power, and furthermore, signaling overheads for setting the power parameter are reduced. .

8. The target received power parameter and the dynamic power adjustment value in the power parameters are set independently, and the path loss compensation coefficient in the power parameters is set in common.

When this form of configuration is adopted, the access network device sets target received power parameters and respective dynamic power adjustment values for the domains, and sets a uniform path loss compensation coefficient for the domains, i.e. , different domains have different target received power parameters and different dynamic power trim values, but have the same path loss compensation coefficient. Optionally, in order to avoid a case where the power difference is excessively large and consequently dynamic signaling cannot be traced, the access network device configures the power difference in a semi-static configuration manner. For example, the access network device transmits the power difference to the terminal with a preset time interval, and the terminal stores and uses the currently received power difference before the power difference is transmitted by the access network device. access next time.

It should be noted that there is no strict sequence between step 401 and step 403, ie step 401 and step 403 can be executed simultaneously, and this embodiment does not limit the execution time sequence of both.

Step 404. The terminal receives the power difference transmitted by the access network device.

Optionally, the terminal calculates, based on the power parameter configured by the access network device, the transmission power expected by the access network device, and determines the transmission power of the data in different domains according to the expected transmit power and the power difference.

Optionally, based on a transmission power calculation formula agreed in a protocol and according to the power parameter configured by the access network device, the terminal calculates the transmission power expected by the access network device, and details are not described again in this embodiment.

In one possible implementation, when the terminal is programmed to transmit data in the first domain, the terminal has to set the transmit power (the first power) as the expected transmit power minus the power difference.

When the terminal is programmed to transmit data in the second domain, the terminal has to set the transmission power (the second power) as the transmission power expected by the access network device.

When the terminal is scheduled to transmit high priority data, the terminal determines to transmit the high priority data in the first domain and sets the transmit power to the transmit power expected by the access network device, thereby reducing the interference from other low priority data in the second domain and improving the reliability of transmission of high priority data.

In a schematic example, in a programming scenario of an eMBB service and a URLLC service, the transmission power expected by the access network device is P, and the power difference configured by the access network device is delta P. When the terminal is programmed to transmit eMBB data on the first domain, transmit power is set to P minus delta P; when the terminal is scheduled to transmit the eMBB data in the second domain, the transmission power is set to P; and, when the terminal is programmed to transmit URLLC data in the first domain, the transmit power is set to P.

Step 405. The terminal transmits data to the first power in the first domain.

With reference to the examples in the previous steps, when the terminal is programmed to transmit the eMMB data in the first domain, the terminal transmits the eMMB data at transmission power P minus delta P.

Step 406. The terminal transmits data to the second power in the second domain.

With reference to the examples in the previous steps, when the terminal is programmed to transmit the eMMB data in the second domain, the terminal transmits the eMMB data at transmission power P.

Optionally, when a resource is preempted by the URLLC service, the terminal transmits the URLLC data to a third power in the first domain. For example, the third power can be the P in the examples above.

In conclusion, in this embodiment, by setting different domains in the transmission resource, the terminal is enabled to transmit data at a corresponding power in different domains, so as to prevent the terminal from frequently detecting a control signal in a data transmission process. uplink, thereby reducing the power consumption of the terminal. Furthermore, transmitting data at different power helps improve the reliability and efficiency of data transmission between the terminal and the access network device in the communication system.

In this embodiment, the access network device transmits the domain configuration information and the power difference between different domains to the terminal, so that the terminal determines different domains according to the domain configuration information, and determines the transmission power of the data in different domains according to the power difference, in order to realize a subsequent uplink data transmission, thereby improving the reliability and efficiency of the uplink data transmission. Furthermore, the access network device configures the power difference in a semi-static manner, thereby avoiding failure to track a power jump.

In this embodiment, the access network devices exchange the domain configuration information with each other and the domain setting is performed according to the obtained domain configuration information, thereby reducing the interference between adjacent cells and further improving the system data transmission quality.

Referring to Figure 5, Figure 5 is a flow chart of a data transmission method according to the invention. This embodiment is illustrated using an example where the method is applied to the communication system in Figure 1. The method includes:

Step 501. An access network device transmits domain configuration information to a terminal, where the domain configuration information is used to indicate configurations of a first domain and a second domain.

In this embodiment, the access network device configures two BWPs for the terminal, and the two BWPs correspond to the first domain and the second domain, respectively. When the domain configuration information is transmitted to the terminal, the access network device transmits configuration information of the two BWPs and configuration information to the terminal.

Optionally, the two BWPs correspond to different resources in the time domain and to different resources in the frequency domain. For example, BWP 1 corresponds to PRB 1 to PRB 50, and BWP 2 corresponds to PRB 51 to PRB 55; or the two BWPs correspond to the same time domain resource and the same frequency domain resource, but correspond to different subcarrier spacings. For example, both BWP 1 and BWP 2 correspond to PRB 51 through PRB 55. However, the corresponding subcarrier spacing for BWP 1 is 60 KHz, and the corresponding subcarrier spacing for BWP 2 is 15KHz This embodiment does not limit this.

Step 502. The terminal receives the domain configuration information transmitted by the access network device.

Correspondingly, after receiving the domain setting information, the terminal determines the first domain and the second domain according to the BWP setting information in the domain setting information.

Step 503. The access network device transmits a power parameter to the terminal, wherein some or all of a first power power parameter and a second power power parameter are set independently.

In this embodiment, the access network device independently configures some or all of the (uplink) power parameters for each BWP, such that the terminal determines the transmit power of the data in each transmission domain. according to the power parameter configured for the BWP.

Optionally, the power parameter includes at least one of a target received power parameter, a path loss compensation coefficient, and a dynamic power adjustment value, wherein the target received power parameter is the power of the data that the access network device expects to receive, the path loss compensation coefficient is used to compensate for power loss in a transmission process, and the dynamic power adjustment value can be indicated in the form of a value or a set (for example, {-3, 0, 3, 6}).

Optional power parameter configuration forms include the following:

1. The target received power parameter and the path loss compensation coefficient in the power parameter are set independently, and the dynamic power adjustment value in the power parameter is set in common.

When this form of configuration is adopted, the access network device configures target received power parameters and respective path loss compensation coefficients for the BWPs, and shares the dynamic power adjustment value for the BWPs, that is, different BWPs have different target received power parameters and different path loss compensation coefficients, but have the same dynamic power trim value.

For example, the power parameter transmitted by the access network device includes a target received power P1 and a path loss compensation coefficient a1 that are configured for a BWP 1; a target received power P2 and a path loss compensation coefficient a2 that are configured for a BWP 2; and a dynamic power adjustment value f1 that is set uniformly. When this form of configuration is adopted, distinguishable power control can be realized for different scenarios, services, and data types, and furthermore, a variation of a channel can be tracked in real time according to a dynamic power adjustment value. shared.

2. The target received power parameter, the path loss compensation coefficient and the dynamic power adjustment value in the power parameter are set independently.

When this form of configuration is adopted, the access network device configures target received power parameters, path loss compensation coefficients and respective dynamic power adjustment values for the BWPs, that is, different BWPs have different power parameters. target received power, different path loss compensation coefficients, and different dynamic power trim values. For example, the power parameter transmitted by the access network device includes the target received power P1, the path loss compensation coefficient a1 and the dynamic power adjustment value f1 that are configured for the BWP 1; and the target received power P2, the path loss compensation coefficient a2 and a dynamic power adjustment value f2 that are configured for the BWP 2.

When this form of configuration is adopted, more accurate distinguishable power control can be performed for different scenarios, services and data types due to setting respective power parameters for the BWPs (however, signaling overheads are increased) .

3. The target received power parameter in the power parameter is set independently, and the path loss compensation coefficient and the dynamic power adjustment value in the power parameter are set in common.

When this configuration form is adopted, the access network device configures respective target received power parameters for the BWPs, and configures a uniform dynamic power adjustment value and path loss compensation coefficient for the BWPs, i.e. That is, different BWPs have different target received power parameters, but have the same dynamic power trim value and different path loss compensation coefficients.

For example, the power parameter transmitted by the access network device includes the target received power P1 that is configured for BWP 1; the target received power P2 that is configured for BWP 2; and the dynamic power adjustment value f1 and the path loss compensation coefficient are uniformly set to.

When this form of configuration is adopted, distinguishable power control can be realized for different scenarios, services and data types by independently setting only the target received power, and furthermore, signaling overheads for setting the power parameter are reduced. .

4. The target received power parameter and the dynamic power adjustment value in the power parameter are set independently, and the path loss compensation coefficient in the power parameter is set in common.

When this form of configuration is adopted, the access network device sets target received power parameters and respective dynamic power adjustment values for the BWPs, and sets a uniform path loss compensation coefficient for the BWPs, i.e. , different BWPs have different target received power parameters and different dynamic power trim values, but have the same path loss compensation coefficient.

For example, the power parameter transmitted by the access network device includes the target received power P1 and the dynamic power adjustment value f1 that are configured for the BWP 1; the target received power P2 and the dynamic power adjustment value f2 that are configured for the BWP 2; and the path loss compensation coefficient a1 which is set uniformly.

5. The path loss compensation coefficient in the power parameter is set independently, and the target received power parameter and the dynamic power adjustment value in the power parameter are set in common.

When this configuration form is adopted, the access network device configures respective path loss compensation coefficients for the BWPs, and configures a uniform target received power parameter and dynamic power adjustment value for the BWPs, i.e. That is, different BWPs have different path loss compensation coefficients, but have the same target received power parameter and dynamic power trim value.

6. The path loss compensation coefficient and the dynamic power adjustment value in the power parameter are set independently, and the target received power parameter in the power parameter is set in common.

When this form of configuration is adopted, the access network device configures path loss compensation coefficients and respective dynamic power adjustment values for the BWPs, and configures a uniform target received power parameter for the BWPs, i.e. , different BWPs have different path loss compensation coefficients and dynamic power trim values, but have the same target received power parameter.

7. The dynamic power adjustment value in the power parameter is set independently, and the target received power parameter and the path loss compensation coefficient in the power parameter are set in common.

When this form of configuration is adopted, the access network device configures respective dynamic power adjustment values for the BWPs, and configures a uniform target received power parameter and path loss compensation coefficient for the BWPs, i.e. That is, different BWPs have different dynamic power trim values, but have the same target received power parameter and path loss compensation coefficient.

When the power parameter is configured in the above three ways, distinguishable power control can be performed for different scenarios, services, and data types, and the signaling overheads generated when the power parameter is configured can be further reduced (because to the existence of a shared configuration).

8. The dynamic power adjustment value, the target received power parameter, and the path loss compensation coefficient in the power parameter are set in common.

When this form of configuration is adopted, the access network device configures a uniform target received power parameter, path loss compensation coefficient, and dynamic power adjustment value for the BWPs, that is, different BWPs have a the same path loss compensation coefficient, the same target received power parameter, and the same dynamic power trim value.

When the power parameter is configured in this way, the signaling overheads generated when it is configured the power parameter are reduced to a minimum value because a configuration parameter is shared by different BWPs. In the subsequent process, the terminal performs distinguishable power control for different scenarios, services and data types according to the power difference configured by the access network device.

Step 504. The terminal receives the power parameter configured by the access network device.

The terminal receives and stores a power parameter configured by the access network device, such that when uplink data is subsequently transmitted, the terminal determines the transmission power based on the power parameter.

Step 505. The terminal determines the first power according to the power parameter, and transmits data at the first power in the first domain.

Optionally, the access network device sets a relatively small target received power in the power parameter for BWP 1 (corresponding to the first domain), such that, when scheduled to transmit data in the first domain, the terminal sets transmit power (ie, the first power) according to the relatively small target received power in the power parameter, and transmit data according to the set transmit power.

For example, when transmitting (uplink) eMMB data on BWP 1, the terminal sets the transmit power with reference to the relatively small target received power, thereby transmitting the eMMB data at low power in the first step. domain.

Step 506. The terminal determines the second power according to the power parameter, and transmits data at the second power in the second domain.

Optionally, the access network device sets a relatively large target received power in the power parameter for BWP 2 (corresponding to the second domain), such that, when scheduled to transmit data in the second domain, the terminal sets transmit power (ie, the second power) according to the relatively large target received power in the power parameter, and transmit data according to the set transmit power.

For example, when the eMMB (uplink) data is transmitted in the BWP 2, the terminal sets the transmission power with reference to the relatively large target received power, thereby transmitting the eMMB data at high power in the BWP 2. second domain.

Optionally, when it is necessary to transmit URLLC data, the terminal transmits the URLLC data using a resource of the BWP 1 (corresponding to the first domain) in a resource-preferred manner, and configures a relatively large transmission power (for example, based on the relatively large target received power) for the URLLC data, thereby improving the reliability of the transmission of the URLLC data.

In conclusion, in this embodiment, by setting different domains in the transmission resource, the terminal is enabled to transmit data at a corresponding power in different domains, so as to prevent the terminal from frequently detecting a control signal in a data transmission process. uplink data, thereby reducing the power consumption of the terminal. Furthermore, transmitting data at different power helps improve the reliability and efficiency of data transmission between the terminal and the access network device in the communication system.

Also, in a 5G system, the reliability requirements of a URLLC service and an eMBB service are different, and the service types cannot be seen at a physical layer. Therefore, power control based on service types becomes a problem to be solved. In this embodiment of this application, at least two BWPs are configured, and URLLC data is transmitted at high power in only one of the BWPs, to implement distinguishable power control based on service types, and help improve the reliability of the transmission of the URLLC data; furthermore, transmission power consumption and interference to the system can be reduced by powering only the URLLC data.

The following describes embodiments of apparatus. Apparatus embodiments correspond to method embodiments. Therefore, for technical details not described in the apparatus embodiments, please refer to the corresponding descriptions in the method embodiments above.

Referring to Figure 6, Figure 6 is a block diagram of a data transmission apparatus according to an illustrative embodiment of this application. The data transmission apparatus may be implemented as all or part of a terminal through software, hardware, or a combination of software and hardware. The device includes:

a first transmission module 610, configured to transmit data at a first power in a first domain; Y

a second transmission module 620, configured to transmit data at a second power in a second domain,

wherein the first domain and the second domain are distinguished through a transmission resource.

Optionally, the first domain and the second domain are distinguished through a resource in the time domain; either,

the first domain and the second domain are distinguished by a resource in the frequency domain; or, the first domain and the second domain are distinguished by the time domain resource and the frequency domain resource; either,

the first domain and the second domain are distinguished by a bandwidth part, BWP, in the frequency domain,

wherein the time-domain resource includes at least one of a symbol, a slot, and a subframe, and the frequency-domain resource includes at least one of a physical resource block, PRB, and a group of blocks of resources, RBG.

Optionally, the device also includes:

an information receiving module, configured to receive domain configuration information transmitted by an access network device, wherein the domain configuration information is used to indicate configurations of the first domain and the second domain.

Optionally, the device also includes:

an information receiving module, configured to receive domain configuration information transmitted by an access network device, wherein the domain configuration information is used to indicate configurations of the domain that works under the first power and the domain that works under the first power under the second power; Y

a difference receiving module, configured to receive a power difference transmitted by the access network device,

wherein the power difference is a difference between a power parameter of the first power and a power parameter of the second power.

Optionally, the power difference is set semi-statically.

Optionally, some or all of the power parameters of the first power and the power parameters of the second power are set independently.

Optionally, a target received power parameter and a path loss compensation coefficient in the power parameter are set independently, and a dynamic power adjustment value in the power parameter is set in common.

either,

the target received power parameter, the path loss compensation coefficient and the dynamic power adjustment value in the power parameter are set independently;

either,

the target received power parameter in the power parameter is set independently, and the path loss compensation coefficient and the dynamic power adjustment value in the power parameter are set in common;

either,

the target received power parameter and the dynamic power adjustment value in the power parameter are set independently, and the path loss compensation coefficient in the power parameter is set in common;

either,

the path loss compensation coefficient in the power parameter is set independently, and the target received power parameter and the dynamic power adjustment value in the power parameter are set in common;

either,

the path loss compensation coefficient and the dynamic power adjustment value in the power parameter are set independently, and the target received power parameter in the power parameter is set in common;

either,

the dynamic power adjustment value in the power parameter is set independently, and the target received power parameter and the path loss compensation coefficient in the power parameter are set in common;

either,

the dynamic power adjustment value, the target received power parameter and the path loss compensation coefficient in the power parameter are set in common.

For related details, refer to the steps performed by the terminal in each of the above method embodiments.

Referring to Figure 7, Figure 7 is a block diagram of a data transmission apparatus according to an illustrative embodiment of this application. The data transmission apparatus may be implemented as all or part of an access network device through software, hardware, or a combination of the software and hardware. The device includes:

a third transmission module 710, configured to transmit data to a third power in a third domain; and a fourth transmission module 720, configured to transmit data at a second power in a second domain,

wherein the first domain and the second domain are distinguished through a transmission resource.

Optionally, the first domain and the second domain are distinguished through a resource in the time domain; either,

the first domain and the second domain are distinguished by a resource in the frequency domain; or, the first domain and the second domain are distinguished by the time domain resource and the frequency domain resource; either,

the first domain and the second domain are distinguished by a bandwidth part, BWP, in the frequency domain,

wherein the time-domain resource includes at least one of a symbol, a slot, and a subframe, and the frequency-domain resource includes at least one of a physical resource block, PRB, and a group of blocks of resources, RBG.

Optionally, the device also includes:

an information transmission module, configured to transmit domain configuration information to a terminal, wherein the domain configuration information is used to indicate configurations of the first domain and the second domain.

Optionally, the device also includes:

an information transmission module, configured to transmit domain configuration information to a terminal, wherein the domain configuration information is used to indicate configurations of the first domain and the second domain; Y

a difference transmission module, configured to transmit a power difference to the terminal, wherein the power difference is a difference between a power parameter of the first power and a power parameter of the second power.

Optionally, the power difference is set semi-statically.

Optionally, some or all of the power parameters of the first power and the power parameters of the second power are set independently.

Optionally,

a target received power parameter and a path loss compensation coefficient in the power parameter are set independently, and a dynamic power adjustment value in the power parameter is set in common.

either,

the target received power parameter, the path loss compensation coefficient and the dynamic power adjustment value in the power parameter are set independently;

either,

the target received power parameter in the power parameter is set independently, and the path loss compensation coefficient and the dynamic power adjustment value in the power parameter are set in common;

either,

the target received power parameter and the dynamic power adjustment value in the power parameter are set independently, and the path loss compensation coefficient in the power parameter is set in common;

either,

the path loss compensation coefficient in the power parameter is set independently, and the target received power parameter and the dynamic power adjustment value in the power parameter are set in common;

either,

the path loss compensation coefficient and the dynamic power adjustment value in the power parameter are set independently, and the target received power parameter in the power parameter is set in common;

either,

the dynamic power adjustment value in the power parameter is set independently, and the target received power parameter and the path loss compensation coefficient in the power parameter are set in common;

either,

the dynamic power adjustment value, the target received power parameter and the path loss compensation coefficient in the power parameter are set in common.

For related details, please refer to the steps performed by the access network device in each of the above method embodiments.

Referring to Fig. 8, Fig. 8 is a schematic structural diagram of a terminal according to an illustrative embodiment of this application, and the terminal includes: a processor 101, a receiver 102, a transmitter 103, a memory 104, and a bus 105.

Processor 101 includes one or more processing cores, and processor 101 performs various applications of function and information processing by executing programs and software modules.

The receiver 102 and the transmitter 103 can be implemented as a communication set, and the communication set can be a communication chip.

Memory 104 is connected to processor 101 via bus 105.

Memory 104 may be configured to store at least one instruction, and processor 101 may be configured to execute the at least one instruction to implement each step performed by the terminal in the above method embodiments.

In addition, memory 104 may be implemented by any type of volatile or non-volatile storage devices or a combination thereof, volatile or non-volatile storage devices include, but are not limited to: a disk or compact disc, memory electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), static random-access memory (SRAM), read-only memory (ROM), magnetic memory, flash memory, and programmable read-only memory (PROM).

Referring to Figure 9, Figure 9 is a schematic structural diagram of an access network device according to an illustrative embodiment of this application, and the access network device includes: a processor 111, a receiver 112, a transmitter 113, a memory 114 and a bus 115.

The processor 111 includes one or more processing cores, and the processor 111 performs various information processing and function applications by executing software programs and modules.

Receiver 112 and transmitter 113 may be implemented as a communications set, and the communications set may be a communications chip.

Memory 114 is connected to processor 111 via bus 115.

Memory 114 may be configured to store at least one instruction, and processor 111 may be configured to execute the at least one instruction to implement each step performed by the access network device in the above method embodiments.

In addition, memory 114 may be implemented by any type of volatile or non-volatile storage devices or a combination thereof, volatile or non-volatile storage devices include, but are not limited to: a disk or compact disk, memory electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), static random-access memory (SRAM), read-only memory (ROM), magnetic memory, flash memory, and programmable read-only memory (PROM).

This application provides a computer-readable storage medium, wherein the storage medium stores at least one instruction, and the at least one instruction is loaded and executed by a processor to implement the data transmission method according to embodiments of previous method.

This application further provides a computer program product, wherein, when the computer program product is executed on a computer, the computer is enabled to perform the data transmission method according to the above method embodiments.

One skilled in the art should be aware that, in the one or more examples above, these functions described in the embodiments of this application may be implemented by hardware, software, firmware, or any combination thereof. When implemented by software, these functions may be stored on a computer-readable medium, or transmitted as one or more instructions or code on the computer-readable medium. Computer readable medium includes a computer storage medium and a communication medium, wherein the communication medium includes any medium that enables a computer program to be transmitted from one place to another place. The storage medium may be any available medium that can be accessed by a general purpose or special purpose computer.

Claims (7)

1. A method of data transmission performed by a terminal, wherein the method comprises: receive (502) domain configuration information, wherein the domain configuration information is used to indicate configurations of a first domain and a second domain, and wherein the first domain and the second domain are distinguished by a part of bandwidth, BWP, in the frequency domain, and wherein the domain configuration information comprises configuration information of a first BWP corresponding to the first domain and configuration information of a second BWP corresponding to the second domain; receive (504) power parameters, wherein some or all of the power parameters are set independently for the first BWP and for the second BWP, and wherein the power parameters include at least one of a power parameter received target, a path loss compensation coefficient and a dynamic power adjustment value; determine (505) a first power in the first domain according to the power parameters, and transmit (201) data at the first power in the first domain; determining a second power in the second domain in accordance with the power parameters, and transmitting data to the second power in the second domain. 2. The method according to claim 1, wherein the first domain and the second domain are distinguished by a resource in the time domain and the BWP in the frequency domain; wherein the time domain resource comprises at least one of a symbol, a slot, and a subframe, and the frequency domain resource comprises at least one of a physical resource block, PRB, and a group of blocks of resources, RBG. 3. The method according to claim 1 or 2, wherein: the target received power parameter and the path loss compensation coefficient in the power parameters are set independently, and the dynamic power adjustment value in the power parameters is set in common, either, the target received power parameter in the power parameters is set independently, and the path loss compensation coefficient and the dynamic power adjustment value in the power parameters are set in common; either, the target received power parameter and the dynamic power adjustment value in the power parameters are set independently, and the path loss compensation coefficient in the power parameters is set in common; either, the path loss compensation coefficient in the power parameters is set independently, and the target received power parameter and the dynamic power adjustment value in the power parameters are set in common; either, the path loss compensation coefficient and the dynamic power adjustment value in the power parameters are set independently, and the target received power parameter in the power parameters is set in common; either, the dynamic power adjustment value in the power parameters is set independently, and the target received power parameter and the path loss compensation coefficient in the power parameters are set in common. 4. A method of receiving data performed by an access network device, wherein the method comprises: transmitting (501) domain configuration information, wherein the domain configuration information is used to indicate configurations of a first domain and a second domain, and wherein the first domain and the second domain are distinguished by a bandwidth part, BWP, in the frequency domain, and wherein the domain configuration information comprises domain configuration information a first BWP corresponding to the first domain and configuration information of a second BWP corresponding to the second domain; transmit (503) power parameters, wherein some or all of the power parameters are set independently for the first BWP and for the second BWP, and wherein the power parameters include at least one of a power parameter received target, a path loss compensation coefficient and a dynamic power adjustment value; receiving (301) data at a first power in the first domain, wherein the first power is determined according to the power parameters; Y receiving data at a second power in the second domain, wherein the second power is determined according to the power parameters. 5. The method according to claim 4, wherein: the target received power parameter and the path loss compensation coefficient in the power parameters are set independently, and the dynamic power adjustment value in the power parameters is set in common, either, the target received power parameter, the path loss compensation coefficient and the dynamic power adjustment value in the power parameters are set independently; either, the target received power parameter in the power parameters is set independently, and the path loss compensation coefficient and the dynamic power adjustment value in the power parameters are set in common; either, the target received power parameter and the dynamic power adjustment value in the power parameters are set independently, and the path loss compensation coefficient in the power parameters is set in common; either, the path loss compensation coefficient in the power parameters is set independently, and the target received power parameter and the dynamic power adjustment value in the power parameters are set in common; either, the path loss compensation coefficient and the dynamic power adjustment value in the power parameters are set independently, and the target received power parameter in the power parameters is set in common; either, the dynamic power adjustment value in the power parameters is set independently, and the target received power parameter and the path loss compensation coefficient in the power parameters are set in common. 6. A data transmission apparatus, wherein the data transmission apparatus is configured to perform the method of any one of claims 1 to 3. 7. A data receiving apparatus, wherein the data receiving apparatus is configured to perform the method of claims 4 or 5.